CITY OF FAIRFIELD
California — Community Water System — PWSID: CA4810003
System Information
| PWSID | CA4810003 |
| System Name | CITY OF FAIRFIELD |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | FAIRFIELD |
| ZIP Code | 94533-4836 |
| Address | 1000 WEBSTER STREET |
| Organization | HETHER, MICHAEL |
| Phone | 707-428-7485 |
Population & Service
| Population Served | 120,377 |
| Service Connections | 32,910 |
Drinking Water Violations (5)
This water system has 5 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | RPT | No | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Oct 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | TT | Yes | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Dec 1, 2007 | Dec 31, 2007 | Surface Water Treatment Rule | MR | No | No | — | — | — | Resolved | Dec 21, 2007 | Surface Water Treatment Rule |
| May 1, 1999 | May 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 1999 | Total Coliform Rule |
| May 1, 1999 | May 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 1999 | Total Coliform Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.